![Srinivasa Kalyanam](https://image.tmdb.org/t/p/w185/3yMUEvaSPOK1Feos3bRUL7OqiX8.jpg)
Rachel Watson, devastated by her recent divorce, spends her daily commute fantasizing about the seemingly perfect couple who live in a house that her train passes every day, until one morning she sees something shocking happen there and becomes entangled in the mystery that unfolds.